Welder icon files.

Signed-off-by: Hawk_v3 <hawk.v3@ntlworld.com>
Prelim welder work, for icons. Later code for changing and stuff in progress.

Compiles, but most likely breaks, due to being incomplete/
WELDERS
Merge branch 'master' of https://github.com/Jamini/NEVUnity

Conflicts:
	code/game/objects/items/weapons/tools.dm
	icons/obj/items.dmi
Merge branch 'master' of https://github.com/Jamini/NEVUnity
Merge pull request #23 from Hawk-v3/master

Welders